005_panic_with_recover

Go Sample Example - Panic with Recover

This repository demonstrates the use of panic along with recover in Go. It showcases how a panicking program can regain control using the recover function within a deferred function, preventing the program from crashing.

📖 Information

• This example covers the usage of `panic` and `recover` in Go.
• The `panic` function triggers a panic, which begins unwinding the stack, while the `recover` function is used to catch the panic and allow the program to continue executing.
• This technique can be used to handle unexpected errors and avoid abrupt termination of the program.

💻 Code Example

package main

import (
	"fmt"
)

func main() {

	// The recover function is used to regain control of a panicking goroutine.
	// It can be used within a deferred function to catch a panic and prevent the program from crashing

	defer func() {
		if r := recover(); r != nil {
			fmt.Println("Recovered from panic:", r)
		}
	}()
	fmt.Println("Starting main")
	panic("A severe error occurred")
	fmt.Println("This will not be printed")
}

🏃 How to Run

1. Make sure you have Go installed. If not, you can download it from here.

2. Clone this repository:

   git clone https://github.com/Rapter1990/go_sample_examples.git

3. Navigate to the 027_panic_and_defer/005_panic_with_recover directory:

   cd go_sample_examples/027_panic_and_defer/005_panic_with_recover

4. Run the Go program:

   go run main.go

📦 Output

When you run the program, you should see the following output:

Starting main
Recovered from panic: A severe error occurred